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Charlie G
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I was wondering if it was possible to bend a beam of light with a magnet. If this is possible could someone tell me what the requirements for the magnet be to do such a thing.
pallidin said:Electromagnetic (EM) waves cannot interact directly with light photons since photons have no charge. EM waves do not bend light, at least enough that we can measure. If radio waves, for example, bent light appreciably then a transmitting radio station would look blurry. But stations don’t go blurry.
Charlie G said:I was wondering if it was possible to bend a beam of light with a magnet. If this is possible could someone tell me what the requirements for the magnet be to do such a thing.
Light, however, has no charge and therefore its path is unaffected by a magnet.
pallidin said:Electromagnetic (EM) waves cannot interact directly with light photons since photons have no charge. EM waves do not bend light, at least enough that we can measure. If radio waves, for example, bent light appreciably then a transmitting radio station would look blurry. But stations don’t go blurry.
Always thought that stations did get blurry called Mexican thing... hound?. Automatic Frequency Control is a device which follows the changes in receptance of a carrier wave!
Greetings
pallidin said:The following is from: http://www.wonderquest.com/extinctions-safetyglass-magnetslasers.htm
Electromagnetic (EM) waves cannot interact directly with light photons since photons have no charge.
No, that quote has nothing to do with either mass or gravity. And, in fact, while it is true that light has no mass, it is affected by gravity. The fact that light bends around stars was one of the first important tests of relativity.Cspeed said:Does that mean that because light has no mass it is not affected by gravity?
Tac-Tics said:If you have a standard bar magnet and an old CRT television or computer screen, try it for yourself. As you bring the magnet near the screen, you'll see the picture go crazy. This is due to the force of the magnet on the stream of electrons through the television. In fact, bending light with magnets is the fundamental principle behind CRT televisions!
Nick89 said:This is a bit of a weird statement (sorry)... First you say correctly that CRT tv's bend a stream of electrons with magnets. Then you conclude that they are bending light with magnets?
CRT tv's are not bending the path of light with magnets, they are bending the path of electrons.
The last time I quoted this something went wrong. I mentioned "the mexican hound" The effect that stations actually used to get blurrypallidin said:Electromagnetic (EM) waves cannot interact directly with light photons since photons have no charge. EM waves do not bend light, at least enough that we can measure. If radio waves, for example, bent light appreciably then a transmitting radio station would look blurry. But stations don’t go blurry.
JANm said:The last time I quoted this something went wrong. I mentioned "the mexican hound" The effect that stations actually used to get blurry
when received with old radio's. This effect has been corrected by the automatic frequency control: a way to let the receiving radio follow the base frequency of the carrier wave.
I still don't have an answer to this remark Pallidin, stations used to get blurry before this invention!
greeting Janm
Tac-Tics said:I'm probably mixing theories, but can't photons interact with EM waves, seeing as EM waves *are* photons, and photons, being bosons, tend to clump into similar states?
Hallo ZapperZ,ZapperZ said:... we need to make sure we FRAME the scope/range of this question properly...
... Magnetic fields do not bend light under a typical and large range of parameters. Period.
Zz.
JANm said:Hallo ZapperZ,
So if people as important as Eddington and/or Einstein state that light bends by gravitation that is to be taken seriously and this question that it could possibly be the magnetic field of the Sun which could be the cause for this bending has to be closed?
I might say magnetic field is a better candidate for bending light then gravitation!
greetings Janm
Charlie G said:I was wondering if it was possible to bend a beam of light with a magnet. If this is possible could someone tell me what the requirements for the magnet be to do such a thing.
Count Iblis said:ZapperZ, but what we call "classical electromagnetism" is in reality quite complicated quantum mechanics involving coherent states of photons.
Why can't we call the Euler-Heisenberg lagrangian classical too? I mean, if the nonlinear corrections had been larger (e.g. if the fne structure constant had been larger or electron mass smaller), then Faraday could have measured a vacuum birefringence effect and Maxwell's would have been able to put everything together and write down the Euler-Heisenberg equations. The coefficients of the nonlinear terms would then be phenomenological parameters.
Euler and Heisenberg would then later explain the origin of these terms. But everyone would refer to the Euler Heisenberg equation as the "classical Maxwell eqations".
Hello ZapperZZapperZ said:The classical Maxwell Equation provides no mechanism for light to be bent in a magnetic field. Zz.
JANm said:Hello ZapperZ
The issue of bending of light was first brought to us by Laplace isn't it?
What I meant to say is light electromagnetic wave. So the chance that it is bent by magnetism or electric field, but that is not the issue in this thread, is there. Why not look into it? Having no restmass it is more farfetched to think it is bended by gravitation than magnetic field. That is what I tried to pose.
The classical Maxwell Equation provides no mechanism for light to be bent in gravitational field either!
greetings Janm
JANm said:I've been reading some Maxwell lately and found that magnetic field has power to rotate the plane of polarisation...
greetings Janm
JANm said:magnetic field has power to rotate the plane of polarisation...
jtbell said:Is that in a vacuum or in a medium?
Charlie G said:Darn. There goes my invisibility cloak lol. The only other option to bend light around myself would be gravity, but I am sure a suit like that would have some major consequencies(everything flying at it lol). Oh well, thanks for the reply :)
Lok said:One effect a magnet has on a photon is rotate it's plane of polarization (must be very strong). Maybe u could use that for your invisibility cloak.
JANm said:I've been reading some Maxwell lately and found that magnetic field has power to rotate the plane of polarisation...
greetings Janm
ZapperZ said:We have not yet seen any photon-photon interaction, which is one of the higher-order interactions predicted within QED.
Lok said:One effect a magnet has on a photon is rotate it's plane of polarization (must be very strong). Maybe u could use that for your invisibility cloak.
JANm said:Maxwell talks about through a Medium.
elect_eng said:The principle used is called the Faraday Effect and is induced by magnets in a strongly birefringent crystal.